Valve arrangement for a vacuum pump

Details Valve arrangement for a vacuum pump Valve arrangement for a vacuum pump

2006-05-02

2006-05-02

Nguyen, Tuan (Department: 3751)

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

C251S172000, C251S321000, C251S339000

Reexamination Certificate

active

07036792

ABSTRACT:
A valve arrangement for a vacuum pump includes a valve head displaceable substantially perpendicular to a flow direction of a fluid through the valve arrangement, a valve seat, and a valve spring for biasing the valve head into a flat abutment engagement with the valve seat, with the valve spring being formed of at least one substantially hollow body made of an elastomeric material.

REFERENCES:
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patent: 4962881 (1990-10-01), Otsuki et al.
patent: 5163655 (1992-11-01), Chickering et al.
patent: 1112359 (1959-04-01), None
patent: 9634518 (1998-03-01), None
patent: 9721356 (1998-12-01), None
patent: 2655535 (1991-06-01), None
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